CN115962029A - Gasoline particle trapping device, vehicle exhaust emission system and control method - Google Patents
Gasoline particle trapping device, vehicle exhaust emission system and control method Download PDFInfo
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- CN115962029A CN115962029A CN202211498420.8A CN202211498420A CN115962029A CN 115962029 A CN115962029 A CN 115962029A CN 202211498420 A CN202211498420 A CN 202211498420A CN 115962029 A CN115962029 A CN 115962029A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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Abstract
The invention discloses a gasoline particle trapping device, a vehicle tail gas discharge system and a control method, which belong to the technical field of vehicle tail gas treatment, and comprise a shell, and a ternary catalytic carrier, an inorganic matter discharge device, an air supply device and a particle trapping carrier which are positioned in the shell; a baffle is arranged between the ternary catalytic carrier and the particle trapping carrier, a central hole is formed in the middle of the baffle and connected with one end of a hollow pipe, the other end of the hollow pipe is connected with a valve control device, the valve control device is fixed at the tail end of the shell, and the valve control device is used for controlling the opening and closing of a valve in the hollow pipe; one end of the three-way catalytic carrier is connected with an exhaust port of the engine, and one end of the particle trapping carrier is connected with the inorganic matter discharging device. The gasoline particle catcher does not work under the full working condition of vehicle operation, and the particle catching function is started when in need, so that the back pressure of an exhaust system can be greatly reduced, the power loss of an engine is reduced, and the dynamic property and the economical efficiency of the whole vehicle are improved.
Description
Technical Field
The invention belongs to the technical field of vehicle tail gas treatment, and particularly relates to a gasoline particle trapping device, a vehicle tail gas emission system and a control method.
Background
Along with the implementation of the national emission regulation, various automobile manufacturers increasingly add gasoline particulate traps (GPF) in an emission aftertreatment system for capturing particulate matters in automobile exhaust; the existing gasoline particle catcher is usually connected in series behind a three-way catalyst, and the technical scheme has the following defects:
1) Under the full working condition of vehicle operation, the gasoline particle catcher participates in the work, the back pressure of an exhaust system can be greatly increased, the power loss of an engine is further increased, and the dynamic property and the economical efficiency of the whole vehicle are reduced; meanwhile, the service life of the gasoline particle catcher is shortened;
2) After the gasoline particle catcher catches particles to a certain degree, regeneration needs to be carried out by changing engine combustion, and the smoothness of vehicle running, the noise of the whole vehicle and the like are influenced; meanwhile, the fuel consumption is increased during regeneration;
3) When inorganic matters in the gasoline particle catcher can not be discharged, the problem can be solved only by replacing the gasoline particle catcher, so that the after-sale maintenance cost of the whole vehicle is increased;
4) When the gasoline particle catcher is regenerated, the carbon particles are combusted secondarily in the gasoline particle catcher, so that the exhaust temperature is increased, the durability of the welding seam at the air outlet end is greatly influenced, and the durability failure is easily caused;
5) The gasoline particle catcher is generally arranged below a chassis and is easy to cause ice blockage and failure in a low-temperature environment; and only has the function of trapping particles, and the function is single.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a gasoline particle trap device, a vehicle exhaust emission system and a control method, wherein the gasoline particle trap does not work under the full working condition of vehicle operation, and the particle trap function is started only when in need, so that the back pressure of an exhaust system can be greatly reduced, and further the power loss of an engine is reduced, and the dynamic property and the economical efficiency of the whole vehicle are improved; meanwhile, the service life of the gasoline particle catcher is greatly prolonged.
The invention is realized by the following technical scheme:
a gasoline particle trapping device comprises a shell, a three-way catalytic carrier 1, an inorganic matter discharging device 3, an air supplementing device 5 and a particle trapping carrier 6, wherein the three-way catalytic carrier 1, the inorganic matter discharging device 3, the air supplementing device 5 and the particle trapping carrier 6 are positioned in the shell; a baffle is arranged between the ternary catalytic carrier 1 and the particle trapping carrier 6, a central hole is formed in the middle of the baffle and is used for being connected with one end of a hollow pipe 9, the other end of the hollow pipe 9 is connected with a valve control device 8, the valve control device 8 is fixed at the tail end of the shell, and the valve control device 8 is used for controlling the valve in the hollow pipe 9 to be opened and closed; one end of the three-way catalytic carrier 1 is connected to an exhaust port of an engine, and one end of the particle-collecting carrier 6 is connected to the inorganic matter discharging device 3.
Further, the trapping device also comprises a sensor unit, wherein the sensor unit comprises a particulate matter induction sensor 2, a first differential pressure monitoring probe 4 and a second differential pressure monitoring probe 7; the particle induction sensor 2 is positioned on the shell and used for detecting the number of particles, and the first pressure difference monitoring probe 4 and the second pressure difference monitoring probe 7 are respectively positioned at the front end and the rear end of the particle trapping carrier 6 and used for detecting the pressure of the particle trapping carrier 6.
Further, an air supply device 5 is provided at the front end of the particle trapping carrier 6 for supplying air to the particle trapping carrier 6.
Furthermore, a flow guide structure is arranged at the welding seam position of the gas outlet end and used for preventing the ultrahigh-temperature hot gas generated after the particle trapping carrier 6 is regenerated from directly blowing to the welding seam position, so that the durability of the welding seam is protected, and the durability failure is avoided; the flow guide structure can be made of different materials and can also be constructed into different shapes, and the exhaust gas can be guided conveniently.
Further, the particle trapping carrier 6 is coated with the coating material, and the particle trapping carrier 6 not only has a particle trapping function, but also can perform catalytic conversion on automobile exhaust pollutants, so that the functions of the particle trapping device are enriched.
In another aspect, the present invention provides a vehicle exhaust system comprising the particulate trap device described above.
In a third aspect, the present invention further provides a control method for a gasoline particulate trap device, specifically comprising the steps of:
the particle induction sensor 2 collects the number of carbon particles in real time in the running process of the engine, and the first pressure difference monitoring probe 4 and the second pressure difference monitoring probe 7 are used for collecting the pressure of the front end and the rear end of the particle trapping carrier 6 so as to calculate the pressure difference of the front end and the rear end of the particle trapping carrier 6;
if the number of collected carbon particles is less than 3 x 10 11 If the exhaust gas is not trapped by the particles, the valve control device 8 controls the valve in the hollow pipe to be opened, and the automobile exhaust directly passes through the ternary catalytic carrier 1 to convert the pollutants discharged in the exhaust gas and is discharged through the hollow pipe;
if the number of collected carbon particles is more than 3 x 10 11 And when the automobile exhaust passes through the ternary catalytic carrier 1 and then the particle trapping carrier 6, the particles in the exhaust are trapped.
Further, if the pressure difference exceeds the allowable pressure, the regeneration is triggered, the air supplementing device 5 is filled with air, and the particles in the particle trapping carrier 6 are combusted and regenerated to reduce the back pressure of the particle trapping carrier 6;
if the differential pressure does not exceed the allowable pressure, regeneration is not triggered.
Further, the inorganic matters trapped by the particle trapping carrier 6 and the inorganic matters generated by regeneration are discharged with the air flow from the particle trapping carrier 6 by the inorganic matter discharging device 3.
Compared with the prior art, the invention has the following advantages:
1) The gasoline particle catcher does not work under the full working condition of vehicle operation, and the particle catching function is started only when in need, so that the back pressure of an exhaust system can be greatly reduced, the power loss of an engine is reduced, and the dynamic property and the economical efficiency of the whole vehicle are improved; meanwhile, the service life of the gasoline particle catcher is greatly prolonged;
2) The regeneration of the gasoline particle catcher is carried out through the external device, the combustion of an engine is not required to be changed, and the running smoothness of a vehicle, the noise of the whole vehicle, the fuel consumption and the like are not influenced;
3) Inorganic matters in the gasoline particle catcher can be discharged, the service life of the gasoline particle catcher is greatly prolonged, and the after-sale maintenance cost of the whole vehicle is reduced;
4) The structure of the welding seam at the air outlet end is optimized, so that the temperature of the welding seam is reduced, and the durability of the welding seam is greatly improved;
5) The gasoline particle catcher has the advantages that the functions of the gasoline particle catcher are increased and the problem of ice blockage in a low-temperature environment is solved by the technologies of tightly coupling the gasoline particle catcher, adding coating to the catcher and the like.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic view of a first configuration of a gasoline particulate trap apparatus of the present invention;
FIG. 2 is a schematic diagram of a second configuration of a gasoline particulate trap apparatus of the present invention;
FIG. 3 is a third schematic view of a gasoline particulate trap device according to the present invention;
FIG. 4 is a schematic view of the weld position of a gasoline particulate trap apparatus according to the present invention;
in the figure: the device comprises a ternary catalytic carrier 1, a particulate matter induction sensor 2, an inorganic matter discharge device 3, a first differential pressure monitoring probe 4, an air supply device 5, a particle trapping carrier 6, a second differential pressure monitoring probe 7, a valve control device 8 and a hollow pipe 9.
Detailed Description
For clearly and completely describing the technical scheme and the specific working process thereof, the specific implementation mode of the invention is as follows by combining the drawings in the specification:
in the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Example 1
As shown in fig. 1, which is a schematic structural diagram of a gasoline particle trapping device in this embodiment, the gasoline particle trapping device includes a casing, and a three-way catalytic carrier 1, an inorganic matter discharging device 3, an air make-up device 5, and a particle trapping carrier 6 located in the casing; a baffle is arranged between the ternary catalytic carrier 1 and the particle trapping carrier 6, a central hole is formed in the middle of the baffle and is used for being connected with one end of a hollow tube 9, the other end of the hollow tube 9 is connected with a valve control device 8, the valve control device 8 is fixed at the tail end of the shell, and the valve control device 8 is used for controlling the valve in the hollow tube 9 to be switched on and off; one end of the three-way catalytic carrier 1 is connected with an exhaust port of an engine, and one end of the particle trapping carrier 6 is connected with the inorganic matter discharging device 3.
In this embodiment, the trapping device further comprises a sensor unit, wherein the sensor unit comprises a particulate matter induction sensor 2, a first differential pressure monitoring probe 4 and a second differential pressure monitoring probe 7; the particle induction sensor 2 is positioned on the shell and used for detecting the number of particles, and the first pressure difference monitoring probe 4 and the second pressure difference monitoring probe 7 are respectively positioned at the front end and the rear end of the particle trapping carrier 6 and used for detecting the pressure of the particle trapping carrier 6.
In this embodiment, the front end of the particle-collecting carrier 6 is provided with an air supply device 5 for supplying air to the particle-collecting carrier 6.
As shown in fig. 4, in this embodiment, the welding seam position of the gas outlet end is provided with a flow guiding structure for preventing the ultra-high temperature hot gas generated after the regeneration of the particle trapping carrier 6 from directly blowing to the welding seam position, so as to protect the durability of the welding seam and avoid the durability failure; the flow guide structure can be made of different materials or be constructed into different shapes, so that the exhaust gas can be guided conveniently.
In this embodiment, the particle trapping carrier 6 is coated with a coating material, and the particle trapping carrier 6 not only has a particle trapping function, but also can perform catalytic conversion on pollutants in automobile exhaust, thereby enriching the functions of the particle trapping device.
Example 2
The present embodiment provides a vehicle exhaust system including the particulate trap device of embodiment 1.
Example 3
The embodiment provides a control method of a gasoline particle trapping device, which specifically comprises the following steps:
the particle induction sensor 2 collects the number of carbon particles in real time in the running process of the engine, and the first pressure difference monitoring probe 4 and the second pressure difference monitoring probe 7 are used for collecting the pressure of the front end and the rear end of the particle trapping carrier 6 so as to calculate the pressure difference of the front end and the rear end of the particle trapping carrier 6;
as shown in fig. 2, if the number of collected carbon particles is less than 3 x 10 11 If the exhaust gas is not trapped by the particles, the valve control device 8 controls the valve in the hollow pipe to be opened, and the automobile exhaust directly passes through the ternary catalytic carrier 1 to convert the pollutants discharged in the exhaust gas and is discharged through the hollow pipe;
as shown in fig. 3, if the number of collected carbon particles is more than 3 × 10 11 Secondly, the particulate matter is required to be trapped, a valve control device 8 controls a valve in the hollow pipe to be closed, and the automobile exhaust firstly passes through the ternary catalytic carrier 1 and then passes through the particulate matter trapping carrier 6 to trap the particulate matter in the exhaust;
if the pressure difference exceeds the allowable pressure, the regeneration is triggered, the air supply device 5 is filled with air, and the particles in the particle trapping carrier 6 are combusted and regenerated to reduce the back pressure of the particle trapping carrier 6;
if the differential pressure does not exceed the allowable pressure, regeneration is not triggered.
The inorganic matters trapped by the particle trapping carrier 6 and the inorganic matters regenerated are discharged from the particle trapping carrier 6 with the air flow by the inorganic matter discharging device 3.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that, in the above embodiments, the various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (9)
1. A gasoline particle trapping device is characterized by comprising a shell, a three-way catalytic carrier (1), an inorganic matter discharging device (3), an air supplementing device (5) and a particle trapping carrier (6), wherein the three-way catalytic carrier, the inorganic matter discharging device, the air supplementing device and the particle trapping carrier are positioned in the shell; a baffle is arranged between the three-way catalytic carrier (1) and the particle trapping carrier (6), a central hole is formed in the middle of the baffle and is used for being connected with one end of a hollow pipe (9), the other end of the hollow pipe (9) is connected with a valve control device (8), the valve control device (8) is fixed at the tail end of the shell, and the valve control device (8) is used for controlling the valve in the hollow pipe (9) to be opened and closed; one end of the three-way catalytic carrier (1) is connected with an exhaust port of an engine, and one end of the particle trapping carrier (6) is connected with the inorganic matter discharging device (3).
2. The gasoline particulate trap device of claim 1, further comprising a sensor unit, wherein the sensor unit comprises a particulate matter sensing sensor (2), a first differential pressure monitoring probe (4) and a second differential pressure monitoring probe (7); the particle induction sensor (2) is positioned on the shell and used for detecting the number of particles, and the first pressure difference monitoring probe (4) and the second pressure difference monitoring probe (7) are respectively positioned at the front end and the rear end of the particle trapping carrier (6) and used for detecting the pressure of the particle trapping carrier (6).
3. The gasoline particulate trap apparatus as defined in claim 1, wherein the particulate trap carrier (6) is provided at its front end with an air supply means (5) for supplying air to the particulate trap carrier (6).
4. The gasoline particle trapping device as claimed in claim 1, wherein the welding seam position of the gas outlet end is provided with a flow guiding structure for preventing the ultrahigh-temperature hot gas directly blowing the welding seam position after the regeneration of the particle trapping carrier (6), thereby protecting the durability of the welding seam and avoiding the durability failure.
5. The gasoline particle trapping device according to claim 1, wherein the particle trapping carrier (6) is coated with a coating material, and the particle trapping carrier (6) not only has a particle trapping function, but also can perform catalytic conversion on automobile exhaust pollutants, so that the function of the particle trapping device is enriched.
6. A vehicle exhaust system comprising a particulate trapping device according to any one of claims 1 to 5.
7. The method for controlling a gasoline particulate trap device according to claim 1, comprising the steps of:
the particle induction sensor (2) collects the number of carbon particles in real time in the running process of the engine, and the first pressure difference monitoring probe (4) and the second pressure difference monitoring probe (7) are used for collecting the pressure of the front end and the rear end of the particle trapping carrier (6) so as to calculate the pressure difference of the front end and the rear end of the particle trapping carrier (6);
if the number of collected carbon particles is less than 3 x 10 11 If the exhaust gas is not the exhaust gas, the valve control device (8) controls a valve in the hollow pipe to be opened, and the automobile exhaust gas directly passes through the three-way catalytic carrier (1) to be converted into pollutants in the exhaust gas and is discharged through the hollow pipe;
if the number of collected carbon particles is more than 3 x 10 11 And when the automobile exhaust passes through the ternary catalytic carrier (1) and then passes through the particle trapping carrier (6), the particles in the exhaust are trapped.
8. The control method of a gasoline particle trap as defined in claim 7, wherein if the pressure difference exceeds the allowable pressure, regeneration is triggered, and the air supply device (5) is introduced with air to burn and regenerate the particles in the particle trap carrier (6) for reducing the back pressure of the particle trap carrier (6);
if the differential pressure does not exceed the allowable pressure, regeneration is not triggered.
9. The method for controlling a gasoline particulate trap apparatus according to claim 7, wherein the inorganic matters trapped by the particulate trap carrier (6) and the inorganic matters regenerated are discharged from the particulate trap carrier (6) with the air flow by the inorganic matter discharging means (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211498420.8A CN115962029A (en) | 2022-11-28 | 2022-11-28 | Gasoline particle trapping device, vehicle exhaust emission system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211498420.8A CN115962029A (en) | 2022-11-28 | 2022-11-28 | Gasoline particle trapping device, vehicle exhaust emission system and control method |
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| Publication Number | Publication Date |
|---|---|
| CN115962029A true CN115962029A (en) | 2023-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211498420.8A Pending CN115962029A (en) | 2022-11-28 | 2022-11-28 | Gasoline particle trapping device, vehicle exhaust emission system and control method |
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|---|---|
| CN (1) | CN115962029A (en) |
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- 2022-11-28 CN CN202211498420.8A patent/CN115962029A/en active Pending
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